Messaging

Bird (formerly MessageBird) is a cloud communications platform providing programmable APIs for SMS, WhatsApp, voice, email, and conversational AI, enabling enterprises to build global customer communi

Gupshup is a conversational messaging platform that provides APIs enabling businesses to communicate with customers across 30+ messaging channels—including WhatsApp, SMS, RCS, Instagram, Google Busine

Loom is an asynchronous video messaging platform that allows users to record their screen, camera, and microphone to create instantly shareable video messages—eliminating meetings that could be replac

Mattermost is an open-source, self-hostable team messaging and collaboration platform built for security-conscious enterprises, government agencies, and development teams that cannot or will not use c

Microsoft Teams is Microsoft's enterprise collaboration hub within Microsoft 365 — integrating workplace messaging (chat channels and direct messages), video conferencing, file storage (SharePoint and

Mio is a cross-platform messaging hub enabling enterprise teams to communicate across different messaging platforms — Microsoft Teams, Slack, Cisco Webex, and Zoom Team Chat — without switching applic

Resend is a San Francisco-based developer-first email infrastructure company providing a modern email API — built on React Email and optimized for developer experience — that enables software teams to

Stamp AI is an AI-native email client that acts as an AI secretary for professionals overwhelmed by inbox volume — automatically filtering, prioritizing, composing, and sending emails in the user's vo

Termii is a Lagos, Nigeria-based communications-as-a-service platform — backed by Y Combinator (W20) with $5.18 million in total funding including a $3.65 million round in June 2023 led by FinTech Col

Upstream is a Paris-based productivity startup building a collaborative email client designed for team communication — adding task tracking, full conversation context, and collaboration features on to